Meaning of euhemerism

eu•he•mer•ism

Pronunciation: (y-hē'mu-riz"um, -hem'u-), [key]
— n.
  1. (often cap.) the theory of Euhemerus that the mythologies of various gods arose out of the deification of dead heroes.
  2. the theory that mythology is derived from history.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.